BSCI – Route Redistribute Lab

Coming back from a sunny day off (a nice day in Williamsburg) and before my BGP studies (starting tomorrow) – the last big and scary part of this exam, I worked on Route Redistribute theory and lab.

The theory is simple: Sometimes you have to connect networks that use different protocols. Doing so require adjusting the distributed route to the new environment meaning metric, cost and bandwidth should be considered.

It is not always so simple and when adding the fifth or tenth network to the mix or add some extra backup lines it is complicated but the basic idea is simple.

BSCI - Router Redistribute Lab

My lab has three routers: R1RIP has a Serial and four Loopback interfaces and it’s configured with RIPv2, R2OSPF has a Serial and four Loopback interfaces and it’s configured with OSPF. The third router, R3BOTH has two Serial interfaces, each configured with one of the protocols – RIPv2 or OSPF.

Step I:
This step is identical to my EIGRP and OSPF labs: configuring all the interfaces as the diagram show. For the exam it is always good to remember that a no shutdown is required on every interface. Always assume that an interface is administratively down.
The configuration of R1RIP, R2OSPFand R3BOTHis updated to this point.

Step II:
In order to redistribute RIP routes to the OSPF network the following configuration is required on R3BOTH, the meeting point of the two environments:

This is a relatively simple concept with straight forward commands. The route-map concept for traffic filtering is much more complicated but still make sense and use the good old ACLs which CCNA cover and any CCNP candidate should know.